yohan
0d98099e88
Manager for Redis Cluster created from scratch. Used in a CAC40 company to perform seamless failover with only 2 datacenters.
60 lines
1.6 KiB
Bash
Executable File
60 lines
1.6 KiB
Bash
Executable File
#!/bin/bash
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# Paramètres pouvant être modifiés :
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# MANAGERS : Liste des managers redis.
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# MANAGER_PORT : Port du manager.
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# DURATION : Temps approximatif du reboot.
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#
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# Ensuite dans le script il y a un sleep 30 et un count qui va jusqu’à 10, à modifier si on a besoin de plus de temps pour que le cluster soit modifié.
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# Les logs (sur RHEL6 et RHEL7) sont envoyés dans /var/log/cron si le lancement de ce script est ajouté en crontab.
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############
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MANAGERS="10.166.119.48 10.166.119.47"
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MANAGER_PORT=45000
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############
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DURATION=300
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WAIT=1
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SERVER_IP=$(ip route get 10 | head -n 1 | awk '{print $NF}')
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echo "Preparing redis for reboot."
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for MANAGER in ${MANAGERS}; do
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OUTPUT_ROLE=$(timeout 1 curl -s ${MANAGER}:${MANAGER_PORT}/manager_status 2>&1)
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echo ${OUTPUT_ROLE} | grep -q 'active'
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if [ $? == 0 ]; then
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ACTIVE_MANAGER=${MANAGER}
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break
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else
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continue
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fi
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done
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if [ -z ${ACTIVE_MANAGER} ]; then
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echo "No active manager found."
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echo "Managers tried : ${MANAGERS}"
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exit 2
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else
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echo "Active manager is : ${ACTIVE_MANAGER}"
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fi
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COUNT=0
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while [ $WAIT == 1 ]; do
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echo "Asking ${MANAGER}..."
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OUTPUT=$(timeout 1 curl -s ${MANAGER}:${MANAGER_PORT}/prepare_for_reboot/${SERVER_IP}\&duration=${DURATION} 2>&1)
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echo "$OUTPUT" | grep -q 'DONE'
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if [ $? == 0 ]; then
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WAIT=0
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else
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COUNT=$(($COUNT+1))
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echo $COUNT
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sleep 30
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fi
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if [ $COUNT == 10 ]; then
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echo "Error, manager taking too long to modify the cluster"
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exit 2
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fi
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done
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echo "Ready for reboot"
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